If the canyons that you intend to carve are close to your home, have smooth pavement, unobstructed veiws of the turns, and no traffic, then a sportbike would be a better tool. If, however you are uncertain what's around the next corner, and would like to travel further than 50 miles without discomfort, go with the naked bike. VWW
The best tool for "canyon carving" is the XR/YZ/DRZ/KL of your choice. If you want to go fast around corners on asphalt then take the bike of your choice (your naked will probably be just fine) and find the nearest track program where it's legal, safe, and there are no tickets for going as fast as you want. Just check your ego at the front gate because it WILL take a licking.
Having just had my ass handed to me by an old guy GPTB ,probably only a few years older than me, on Harley V-Rod last weekend. I agree with MO's advice. Spend the money on a track school, tires, and track time probably is the way to go... Sport bikes are like computers the minute you buy one it's obsolete...
Unfortunately the RD has been sold. However I did recently aquire a pristine RG 500 Gamma with 0 miles on it, as it was only backed out of the garage once by it's previous owner, a 95 year old nun from the Our Lady of Mercy Convent. VWW
I would strongly suggest a track school such as the CLASS schools. Reg Pridmore takes his school all over the country and is the most reasonably priced. He emphasizes street riding techniques and is an accomplished rider and teacher. He also makes you feel very welcome, unlike another "guru" that conducts reasonably priced schools throughout the US. I'm a big CLASS school fan, and based on three previous experiences, not a California Superbike School fan. Depending on your skill level, you can still learn a lot from either.
Something else you might do is a bit of reading. There are a couple of GREAT books out there and several more that are worthwhile. In my opinion, Nick Ienatsch's "Sport Riding Techniques" (ISBN #1893618072) is numero uno. His discussion of maintenance throttle and trailbraking are worth the price of the book on their own merit. However, he really covers every bit of sport riding from the beginning techniques to the most advanced. The next book I would highly recommend is David Hough's "MORE Proficient Motorcycling--Mastering the Ride." (ISBN # 1931993033). Hough discusses how to read the road and it's surfaces better than any other book I know of, and offers excellent advice on riding techniques, gear, visual directional control, etc. After devouring these two, here is a list of other worthwhile books, sort of in order of my preference for whatever that is worth: 1) "Total Control-High Performance Street Riding Techniques." by Lee Parks (ISBN #0760314039). 2) "Smooth Riding the Pridmore Way" by Reg Pridmore (ISBN # 1884313469). and 3) "Twist of the Wrist II" by Keith Code (ISBN # 0965045021).
In my opinion, Keith Code's other two books, the first "Twist of the Wrist" and "Soft Science" are pure garbage. David Hough also has out a book entitled "Proficient Motorcycling." It's a good book, but "MORE Proficient Motorcycling" covers the topics better, with more advanced techniques.
All of these books are available at Amazon.com at good discounts, usually with free shipping if you spend over $25. Hope this helps. Enjoy the ride. Cheers, Jack